Packet Loss Detection via Gap Variation Intensity
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Solution Overview
Problem
Current methods for detecting packet loss inaccurately determine the cause, leading to incorrect traffic control, low transmission bandwidth utilization, and potential service interruptions, as they cannot distinguish between packet loss due to transmission congestion and bit errors.
Innovation Solution
A method that determines the variation in packet gaps between sent and received packets, calculating the intensity of this variation to accurately identify whether transmission congestion occurs, thereby avoiding misclassification of packet loss causes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If packet loss rate is used to determine transmission congestion, then packet loss detection can be performed, but transmission bit errors are mistakenly identified as congestion causing inaccurate determination
Solution Approach 1:
The patent segments the packet loss detection process into two distinct parts: measuring packet gap variation (to detect congestion) and measuring packet error rate (to detect bit errors). By dividing the detection mechanism, the system can identify whether packet loss is caused by congestion or transmission errors, resolving the misidentification problem.
Solution Approach 2:
The patent introduces packet gap variation as an intermediary metric between packet loss rate and congestion determination. Instead of directly using packet loss rate to determine congestion, the system uses packet gap variation (the change in time intervals between consecutive packets) as an intermediate indicator that more accurately reflects congestion conditions without being affected by bit errors.
2Reliability
If flow control is applied based on inaccurate packet loss determination, then packet loss can be reduced, but transmission bandwidth utilization becomes extremely low
Solution Approach 1:
The patent segments the flow control decision-making process by introducing distinct metrics for congestion detection (packet gap variation) and error detection (packet error rate). This segmentation enables flow control to be applied only when congestion is accurately identified, preventing unnecessary bandwidth reduction due to misidentification of bit errors as congestion.
Solution Approach 2:
The patent implements a feedback mechanism where the destination node measures packet gap variation and packet error rate, then feeds this information back to the source node. The source node uses this feedback to make informed flow control decisions, adjusting transmission rate based on actual congestion conditions rather than inaccurate packet loss rate alone, thereby maintaining optimal bandwidth utilization.
3Device complexity
If packet loss rate threshold comparison is used, then simple congestion detection can be performed, but service interruption occurs due to incorrect determination
Solution Approach 1:
The patent segments the detection methodology into separate measurements for packet gap variation and packet error rate, each serving a specific purpose. This segmentation improves reliability by preventing service interruptions caused by misidentification, while the computational complexity remains manageable through efficient calculation of time intervals and error rates.
Solution Approach 2:
The patent performs preliminary measurement of packet gap variation and packet error rate before making congestion determination. By pre-calculating these metrics and comparing them against thresholds, the system avoids service interruptions caused by incorrect real-time decisions, ensuring more reliable service continuity.
Data Source
AI summary
A variation of a packet gap between packets sent from a source node and a packet gap between packets received by a destination node is determined; then an intensity of the packet gap variation is determined; and finally whether transmission congestion occurs between the source node and the destination node is determined according to the intensity of the packet gap variation. Therefore, accuracy of identifying a cause of a packet loss is improved, thereby avoiding impact of a transmission bit error.